小编辑 通过本文主要向大家介绍了c站,c语言,欲情 c max,奔驰c200,85度c等相关知识,希望对您有所帮助,也希望大家支持linkedu.com www.linkedu.com
本文实例讲述了C#绘制曲线图的方法。分享给大家供大家参考。具体如下：
1. 曲线图效果：
2. C#代码：
/// <summary>
/// 自动根据参数调整图像大小
/// </summary>
public void Fit()
{
//计算字体距离
intFontSpace = FontSize + 5;
//计算图像边距
float fltSpace = Math.Min(Width / 6, Height / 6);
XSpace = fltSpace;
YSpace = fltSpace;
//计算X轴刻度宽度
XSlice = (Width - 2 * XSpace) / (Keys.Length - 1);
//计算Y轴刻度宽度和Y轴刻度开始值
float fltMinValue = 0;
float fltMaxValue = 0;
for (int i = 0; i < Values.Length; i++)
{
if (Values[i] < fltMinValue)
{
fltMinValue = Values[i];
}
else if (Values[i] > fltMaxValue)
{
fltMaxValue = Values[i];
}
}
if (YSliceBegin > fltMinValue)
{
YSliceBegin = fltMinValue;
}
int intYSliceCount = (int)(fltMaxValue / YSliceValue);
if (fltMaxValue % YSliceValue != 0)
{
intYSliceCount++;
}
YSlice = (Height - 2 * YSpace) / intYSliceCount;
}
</div>
3. 数据缩小一个级别的效果：
4. 完整代码 DrawingCurve.cs：
using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using System.Data;
using System.Drawing.Drawing2D;
namespace SarchPMS.Business.Draw
{
public class DrawingCurve : DrawingChart
{
/// <summary>
/// 画曲线图
/// </summary>
/// <param name="dsParameter"></param>
/// <returns></returns>
public override Bitmap DrawImage(DataSet dsParameter)
{
Curve2D cuv2D = new Curve2D();
cuv2D.Fit();
return cuv2D.CreateImage();
}
}
public class Curve2D
{
private Graphics objGraphics; //Graphics 类提供将对象绘制到显示设备的方法
private Bitmap objBitmap; //位图对象
private float fltWidth = 480; //图像宽度
private float fltHeight = 248; //图像高度
private float fltXSlice = 50; //X轴刻度宽度
private float fltYSlice = 50; //Y轴刻度宽度
private float fltYSliceValue = 20; //Y轴刻度的数值宽度
private float fltYSliceBegin = 0; //Y轴刻度开始值
private float fltTension = 0.5f;
private string strTitle = "曲线图"; //标题
private string strXAxisText = "月份"; //X轴说明文字
private string strYAxisText = "万元"; //Y轴说明文字
private string[] strsKeys = new string[] { "一月", "二月", "三月", "四月", "五月", "六月", "七月", "八月", "九月", "十月", "十一月", "十二月" }; //键
private float[] fltsValues = new float[] { 20.0f, 30.0f, 50.0f, 55.4f, 21.6f, 12.8f, 99.5f, 36.4f, 78.2f, 56.4f, 45.8f, 66.5f, 99.5f, 36.4f, 78.2f, 56.4f, 45.8f, 66.5f, 20.0f, 30.0f, 50.0f, 55.4f, 21.6f, 12.8f }; //值
private Color clrBgColor = Color.Snow; //背景色
private Color clrTextColor = Color.Black; //文字颜色
private Color clrBorderColor = Color.Black; //整体边框颜色
private Color clrAxisColor = Color.Black; //轴线颜色
private Color clrAxisTextColor = Color.Black; //轴说明文字颜色
private Color clrSliceTextColor = Color.Black; //刻度文字颜色
private Color clrSliceColor = Color.Black; //刻度颜色
private Color[] clrsCurveColors = new Color[] { Color.Red, Color.Blue }; //曲线颜色
private float fltXSpace = 100f; //图像左右距离边缘距离
private float fltYSpace = 100f; //图像上下距离边缘距离
private int intFontSize = 9; //字体大小号数
private float fltXRotateAngle = 30f; //X轴文字旋转角度
private float fltYRotateAngle = 0f; //Y轴文字旋转角度
private int intCurveSize = 2; //曲线线条大小
private int intFontSpace = 0; //intFontSpace 是字体大小和距离调整出来的一个比较适合的数字
#region 公共属性
/// <summary>
/// 图像的宽度
/// </summary>
public float Width
{
set
{
if (value < 100)
{
fltWidth = 100;
}
else
{
fltWidth = value;
}
}
get
{
if (fltWidth <= 100)
{
return 100;
}
else
{
return fltWidth;
}
}
}
/// <summary>
/// 图像的高度
/// </summary>
public float Height
{
set
{
if (value < 100)
{
fltHeight = 100;
}
else
{
fltHeight = value;
}
}
get
{
if (fltHeight <= 100)
{
return 100;
}
else
{
return fltHeight;
}
}
}
/// <summary>
/// X轴刻度宽度
/// </summary>
public float XSlice
{
set { fltXSlice = value; }
get { return fltXSlice; }
}
/// <summary>
/// Y轴刻度宽度
/// </summary>
public float YSlice
{
set { fltYSlice = value; }
get { return fltYSlice; }
}
/// <summary>
/// Y轴刻度的数值宽度
/// </summary>
public float YSliceValue
{
set { fltYSliceValue = value; }
get { return fltYSliceValue; }
}
/// <summary>
/// Y轴刻度开始值
/// </summary>
public float YSliceBegin
{
set { fltYSliceBegin = value; }
get { return fltYSliceBegin; }
}
/// <summary>
/// 张力系数
/// </summary>
public float Tension
{
set
{
if (value < 0.0f && value > 1.0f)
{
fltTension = 0.5f;
}
else
{
fltTension = value;
}
}
get
{
return fltTension;
}
}
/// <summary>
/// 标题
/// </summary>
public string Title
{
set { strTitle = value; }
get { return strTitle; }
}
/// <summary>
/// 键，X轴数据
/// </summary>
public string[] Keys
{
set { strsKeys = value; }
get { return strsKeys; }
}
/// <summary>
/// 值，Y轴数据
/// </summary>
public float[] Values
{
set { fltsValues = value; }
get { return fltsValues; }
}
/// <summary>
/// 背景色
/// </summary>
public Color BgColor
{
set { clrBgColor = value; }
get { return clrBgColor; }
}
/// <summary>
/// 文字颜色
/// </summary>
public Color TextColor
{
set { clrTextColor = value; }
get { return clrTextColor; }
}
/// <summary>
/// 整体边框颜色
/// </summary>
public Color BorderColor
{
set { clrBorderColor = value; }
get { return clrBorderColor; }
}
/// <summary>
/// 轴线颜色
/// </summary>
public Color AxisColor
{
set { clrAxisColor = value; }
get { return clrAxisColor; }
}
/// <summary>
/// X轴说明文字
/// </summary>
public string XAxisText
{
set { strXAxisText = value; }
get { return strXAxisText; }
}
/// <summary>
/// Y轴说明文字
/// </summary>
public string YAxisText
{
set { strYAxisText = value; }
get { return strYAxisText; }
}
/// <summary>
/// 轴说明文字颜色
/// </summary>
public Color AxisTextColor
{
set { clrAxisTextColor = value; }
get { return clrAxisTextColor; }
}
/// <summary>
/// 刻度文字颜色
/// </summary>
public Color SliceTextColor
{
set { clrSliceTextColor = value; }
get { return clrSliceTextColor; }
}
/// <summary>
/// 刻度颜色
/// </summary>
public Color SliceColor
{
set { clrSliceColor = value; }
get { return clrSliceColor; }
}
/// <summary>
/// 曲线颜色
/// </summary>
public Color[] CurveColors
{
set { clrsCurveColors = value; }
get { return clrsCurveColors; }
}
/// <summary>
/// X轴文字旋转角度
/// </summary>
public float XRotateAngle
{
get { return fltXRotateAngle; }
set { fltXRotateAngle = value; }
}
/// <summary>
/// Y轴文字旋转角度
/// </summary>
p